Ergonomical lawn chair



FIG. 1 is a top plan view of an ergonomical lawn chair showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is an inverted rear elevational view thereof; and,

FIG. 6 is a front elevational view.

The fragmented depiction of surface treatment in FIG. 1 is understood to be continuous throughout the implied areas. 

The ornamental design for an ergonomical lawn chair, as shown and described. 